Paste-applying machine



F. COATES.

PASTE APPLYING MACHINE.

ArPucArloN FILED SEPT. 25. `1920.

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PASTE APPLYING MACHINE.

APPLlcAnoN FILED SEPT. 25. 1920.

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FREDERICK CUATES, GF WYOMING, OHIO, ASSIGNOR T0 FEDERAL RODUCTS 00M- PANY, 0F CINCINNATI, GHIO, A CORPQRATION 0F UHIO.

PASTE-APPLYING MACHINE.

Specification of Letters Patent.

Patented @et il, MIEI..

Application filed September 25, 1920. Serial No. 412,834.

To @ZZ wlw/m, it may concern.'

Be it known that I, FREDERICK Coarns, a citizen of the United States, residing at Wyoming, in the county of Hamilton and State of hio, have invented certain new and useful Improvements in Paste-Applying Machines, of which the following is a specification.

This invention relates to machines for forming paper receptacles and has special reference to a paste applying machine for use in this connection.

-More particularly the device relates to a paste applying machine of the type wherein rotary elements are employed for applying the paste and paper or other like blanks are fed into a machine for the purpose of having paste applied on certain definite areas of the blanks.

Among the elements included in such machines as usually constructed are a paste tank and paste feeding roller which receives the paste from the tank. In devices of this character as heretofore constructed there has been more or less waste of the paste and usually a collection of excess paste at the lower part of the roller especially at times when no blank is being pasted. One of the principal objects of the present invention is to provide an improved arrangement of paste tank and paste feeding roller wherein the film of paste on the'roller will at all times tend to remain of uniform thickness and wherein any excess of paste that may exist on the roller will be fed back into the paste tank by the revolution of such roller.

Another one of the objections that has existed in devices o f this character is due to the fact that different paste applying rollers were necessary to produce different areas and distribution of paste on the blanks. Thus whenever it was necessary to change the extent, position, or shape of a gummed field on a blank it was necessary to either use a dierent machine or have a different roller for the purpose. A second importantobject of the present invention is to provide an improved `arrangement of paste applying roller wherein without changing the roller itself a variety of gummed `fields may be provided onblanks, either of the same or different sizes and shapes.

A vthird important object of the invention isa plrovision of novel mechanism for vcausee t e mtetonof the reste applying roller at such times as may be desired and for causing this roller to be held from rotation at other times whereby the platen roll will tend to be kept free from paste.

IV ith the above and other objects inY view the invention consists in general of certain novel details of construction, combinations of parts, and arrangements of elements hereinafter fully described, illustrated in the accompanying drawings, and specifically claimed. l

In the accompanying drawings, like characters of reference indicate like parts in the several views and z- Figure 1 is an end view parallel in elevation and parallel in section showing a paste applying machine constructed in accordance with this invention.

Fig. 2 is a perspective view of the rolls and tank of such a machine together' with certain associated parts, the view being parallel in section better to disclose constructional details.

Fig. 3 is a detail section on the line 3 3 of Fig. 1. i

Fig. 4 is a face View of one form of paste applying plate used in connection with the paste applying roller.

Fig. 5 is a view similar to Fig. 4 but showing a different form-of such plate. In the accompanying drawings a construew tion of the `paste applying machine has been shown which it is to be understood is typical of a numberfof constructions each of which is capable of accomplishing the desired rcsults. This particular construction is not therefore to be taken as the only form in which the device may he employed but is simply illustrative of one of many such forms.

In the form herein shown there is pro vided a base 10 and projecting upward from this base is a standard 11 carrying a bearing 12 wherethrough extends a shaft 13. 0n one end of this shaft is arranged means for supplying power to the machine, such means beingV herein indicated as a pulley 14 though it will be obvious that other means such as an electric `motor may be utilized. Fixed on the shaft 14 is a gear wheel 15 which meshes with a gear 16 fixed on a shaft 17 carried in a .bearing 18 formed on the standard 11 and located above the bearing 12. There is also fixed on the shaft 17 a paste feeding roll 19 4v vhich `is here shown as having a smooth IUO cylindrical surface. Suitably supported above the roll 19 is a paste receptacle or tank 20. Now by reference to Figs. 2 and 3 it will be seen that the tank 2O has one side wall 21 which extends longitudinally of the roll 19 and which has its lower edge very close to such roll, the preferred distance between such lower edge and the rolled surface being 5/1000 of an inch. It will also be seen that the other side wall 22 is spaced at a considerably greater distance from the roll, the distance in this case being not less than 20/1000 of an inch.

With the construction of the tank and xpaste feed roll as thus described the rotation will be in the direction of the arrow in Fig. 3. Under these circumstances a thin film of paste not over 5/1000 of an inch in thickness will be fed onto the roll 19 as the latter revolves. If, by reason of the fact that this` paste is not used up, there is a tendency for a heavy accumulation at the bottom of the roll 19 the opening at the lower edge of the side wall 22 willprevent such accumulation since the revolving roll will carry the paste up and back into the tank beneath the edge of this side wall. Of course it will be understoodthat the roll 19 revolves faster than the paste can flow downward over its surface. It will also be noted that the end walls of the tank 2O rest lightly on the roll 19 at or adjacent its ends and thus the escape of paste at these points is prevented.

Beneath the roll 19 is a roll 23 which is preferably termed the. paste distributing roll. This roll is revolubly mounted on the shaft 13 and has at Vone end a recess 24arranged concentric of the shaft 13 so that a sliding plate 25 may be carried on the shaft 13 and bear against the inner end of the recess 24. Fixed on the shaft 13 is also a roller 26 which is held in position by a set screw 27. This roller is provided with a plurality of openings 28 parallel to the axis of the shaft 13 and 'receiving pins 29 slidably, the pins having their projecting ends 30 fixed to the plate 25. Surrounding each pin and bearing at one end against the plate 25 and at the other end against the roller 26 is a coil spring 31. Thus this construction provides for a constant frictional engagement between the plate 25 and the roll 23 and at the same time the connection of the pins and roller 26 causes the plate 25 to revolve with the shaft 13. By properly adjusting the roller 26 along the shaft 13 and locking it in adjusted position with the set screw 27 the degree offriction may be varied at will. In any event a sufficient degree of friction is maintained to insure rotation of the roll 23 unless such rotation is provided in some manner. In order to control this rotation there is provided at one end of the roll a stop pin 32 and suitably pivoted at 33 is a lever 34 having a stop shoulder 35 against which the pin 32 engages unless the lever is thrown to release the roll 23. In order to provide for such release the lever 34 carries an arm 36 which may bc actuated by the operators hand or may be connected to a treadle, not shown, or in any other way desired. It will be observed from the drawings that the roll 23 does not itself touch the feed roll 19 but that on this roll 23 is carried a series of plates 37 each of which has certain raised portions 38, the size. shape and position of which correspond to the size, Shape and position of the por tions of the blanks to which the paste is to be applied. For instance in the form shown in Fig. 4 the plate 37 is arranged to apply the paste in two parallel strips while the form shown in Fig. 5 is a form for use in applying paste intwo parallel strips connected at one end by a cross strip. These plates 37 are held in position on the roll 23 by means of suitable screws 39 passing through openings 40 in the plates. Thus by merely substituting one plate for another the size, position and shape of the gunnned fields may be varied at will. It is to be particularly noted that the portions 38 of these plates are raised sufficiently to contact with the roll 19 as the rolls 23 and 19 rcvolve so that the paste itself on the roll 19 will be transferred from those portions of the roll 19 which contact with the portions 38 of the plate to the surface of said portions 38.

Below the bearing 12 is a third bearing 41 carrying a shaft 42 whereon is mounted a platen roll 43. This platen roll 43 is positioned beneath the roll 23 in such manner that the raised portions 38 of the plates 37 will contact with a paper blank when thc latter is fed between these rolls.

In order to understand the operation of the machine let it be supposed that power has been supplied to the pulley 14. This will revolve the shaft 13 and, through the medium of the gears 15 and 16, will also rcvolve the shaft 17 and feed roll 19. As the roll 19 revolves it becomes coated with a thin film of paste. Meanwhile the frictional engagement of the plate 25 with the roll 23 tends to revolve the latter but this is pre vented by the action of the stop 35 and pin 32. The operator now takes one of the blanks to which it is desired to apply paste and places the edge of such blank in position between the rolls 23 and 43. He then releases the stop 35 whereupon the frictional action of the plate25 will rotate the roll 23. The rotation of this roll 23 will cause the raised portions 38 of the plates 37 to engage the roll 19 and thus these raised portions will become coated with paste. It will be noted that prior to the passage of this first blank between the rolls 23 and 43 the raised portions have been coated since the parts will revolve in the direction of the arrows shown in Fig. :2 and the roll a3 will remain quiet until the plate which is shown at the top in Fig. Q has been brought, by the revolution of the roll 23, into contact with the roll 43. As soon as this plate does contact with the roll the paper will be drawn in between the rolls 23 and 43 and a portion of the gum on the raised parts 38 will be transferred to such blank.

There has thus been provided a simple and efficient device of the kind described and for the purpose specified.

Having thus described the invention, what is claimed as new, is

l. In a machine of the class described, a paste tank, a continuously revolving paste feeding roll coacting with the tank and receiving paste therefrom, an intermittently Vrevolving paste distributing` roll beneath the feeding roll and receiving paste therefrom, means to prevent and permit the revolution of the last mentioned roll, and a platen roll coact-ing with the distributing roll and actuated by the revolution of said distributing roll.

2. In a machine of the class described, a paste feeding roll, a paste distributing roll arranged to coact with the feeding roll, a shaft carrying the distributing roll, gearing arranged to operatively connect the shaft and feeding roll, and a friction clutch for operatively connectingthe shaft and distributing roll.

3. ln a machine of the class described, a paste feeding roll, a paste distributing roll arranged to coact with the feeding roll, a Shaft carrying the distributing roll, gearing arranged to operatively connect the shaft and feeding roll, a friction clutch for operatively connecting the shaft and distributing roil, and releasable means for preventing effective operation of said clutch.

4. ln a machine of the class described, a paste feeding roll, a. paste distributing roll arranged to coact with the feeding roll, a shaft carrying the distributing roll, gearing arranged to operatively connect the shaft and feeding roll, a friction clutch for operatively connecting the shaft and distributing roll, a stop carried by the roll, and a stop lever arranged adjacent the roll for releasable engagement by said stop whereby to prevent effective action of the clutch.

5. In a. machine of the class described, a paste feeding roll, a paste distributing roll arranged to coact with the feeding roll, a shaft carrying the distributing roll, gearing arranged to operatively connect the shaft and feeding roll, a collar fixed on said shaft, a plate slidable on the shaft and having conneet-ion with the collar to rotate therewith, and springs arranged to force the plate into contact with the roll whereby to constitute a frictional clutch connection between the roll and shaft;

6. In a machine of the class described, a paste feeding roll, a paste distributing roll arranged to coact with the feeding roll, a shaft carrying the distributing roll, gearing arranged to operatively connect the shaft and feeding roll, a collar fixed on said shaft, a plate slidable on the shaft and having connection with the collar to rotate therewith, springs arranged to force the plate into contact with the roll whereby to constitute a frietional clutch connection between the roll and shaft, and releasable means for preventing effective operation of said clutch.

7. fn a machine of the class described, a paste feeding roll, a paste distributing roll arranged to coact with the feeding roll, a. shaft carrying the distributing roll, gearing arranged to operatively connect the shaft and feeding roll, a collar fixed on saidV shaft, a plate slidable on the shaft and having connection with the collar to rotate therewith, springs arranged to force the plate into contact with the roll whereby to constitute a frictional clutch connection between the roll and shaft, a stop carried by the roll, and a stop lever arranged adjacent the roll for releasable engagament by said stop whereby to prevent effective action of the clutch.

In testimony whereof I affix my signature.

FREDERICK COATES. 

